Have a lot of accounts with extra quota, extra databases etc compared to the package they have

Now I want to update the packages. Simply doubling the quota for each package.

The result íf I modify the package via "Edit packages" function in WHM is that all accounts are reset to the package settings. Not good, since a lot of accounts has extra quota, extra emails, databases etc.

Ex: If I have changed "Max SQL Databases" to 5 for an account instead of standard 2 for the package it will be reset to 2 if I use the "Edit packages" function in WHM.

This is not what I want.

I suppose the only solution in this case would be to:

1) Change package quota settings without updating all accounts
2) Update account quotas per package and just adding the (new quota - old quota) to each account or updating quota separately

Are there any scripts making this possible or any other ideas?

Most important is to be able to change package qouta without updating all accounts.